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On 05/27/2014 05:23 PM, Felipe Sateler
wrote:
I just *first* noticed I had no more sound. As in both case I use analog output and not HDMI (because monitors I use have no speakers), the cause was probably the same (no more analog audio device) on the two machines although after fixing it on one computer I only verified that reinstalling sysinit-core on the second and rebooting also fixed the problem on the second machine.Hi Eric,So, let me summarize what you did:1. After some upgrades, pulseaudio didn't see the analog output, just the HDMI one. While trying to debug the "no sound", I noticed first kde audio/multimedia config was hanging on my first machine and later on my other machine at work that indeed the pulseaudio was stuck for nearly 2 mins (this probably causing the kde multimedia config panel to hang waiting for pulse) and that anyway, at the end the analog audio device was not there.2. Around the same time, pulseaudio started hanging on startup, returning EAGAIN from the system dbus socket Yes on both machines.3. Installing sysvinit-core fixes both issues Yes.Is this understanding correct? I dunno if the bugs are indeed exactly the same or two expressions of a same root cause but they are both fixed when going back to sysv init. The race in the boot happens on very different type machine (an old core i5 laptop single core/hyperthreaded with classical disk 4GB RAM and a high end core I7 quad core hyperthreaded with SSD and 16 GByte memory).If so, I'm still not sure these are both the same bug: (3) could be a race in the boot scripts only exposed by systemd, unrelated to the dbus issue. If you do not manage to reproduce the bug I can spend a limited amount of time at it. The fact that the two machines are very different may help reproducing it. Maybe you could try to get info from original reporter to see if his problem is also fixed by reinstalling sysvinit-core as an extra hint.Are you willing to try to reproduce the issues again using systemd? This can be done by passing init=/bin/systemd in the grub screen (no need to reinstall systemd-sysv). Although I fear we will need help from the dbus and systemd folks to debug this. NB: both machines were using systemd 208 from experimental. I dunno if problem is related to this version of systemd because I'm nearly 100% sure I have been using systemd208 with sound for a while before it broke the same day after upgrading. And to be fair about my setup that is *unusual*: both machines have a distinct / and /usr (I know this i now considered to be bad for systemd but the 7.0 installer stills allows that without even emitting a warning...) , do not use initramfs and self tuned recent kernels dedicated to the machines with all drivers build-in (except nvidia one ;-)). --eric |
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